...is now possible with the cardpool these days.

http://ringsdb.com/decklist/view/2681/you-can-only-hope-to-contain-her-1.0

This is nowhere near as a good as a full-bore Caldara build, but I think it speaks volumes that it can work at all. As mentioned in the writeup, in a win against The Thing in the Depths, by the time I hit the tentacle stage, I had almost 25 allies on the board, and was ready to recur Fortune or Fate in perpetuum.

Don't mess with Caldara, yo.